Policy Statement
About Us
Customer Focused, Service-Oriented, Analytical Testing Laboratory
Cornerstone Laboratories, LLC is a family-owned and operated, independent analytical laboratory proudly serving Memphis, TN since 2001. Our lab delivers comprehensive testing services for non-medical applications, supporting clients in industries ranging from environmental and industrial, to agricultural, consumer products, pet, and municipal sectors.
Equipped with state-of-the-art instrumentation—including Gas Chromatography (GC), High-Performance Liquid Chromatography (HPLC), Inductively Coupled Plasma (ICP), Mass Spectrometry (MS), and a wide array of advanced wet chemistry techniques—Cornerstone ensures precise, reliable results tailored to each customer’s needs.
We adhere to recognized industry methodologies such as US-EPA, USP, AOAC, and AOCS whenever available, and employ proprietary in-house testing protocols when standard methods do not exist or are not applicable. Cornerstone offers flexible collaboration to help businesses develop custom testing plans, ensuring our services address unique operational requirements.
Cornerstone is committed to exceptional customer service, maintaining the highest standards of confidentiality as well as rigorous quality control and assurance.
Services
Example Environmental, Agricultural and Wastewater Testing Services including, but not limited to:
- Acidity
- Aerobic Plate Count (APC)
- Alkalinity
- Ammonia Nitrogen
- Benzene Toluene Ethylbenzene Xylene (BTEX)
- Bicarbonate
- Biological Oxygen Demand (BOD)
- Boiler and Cooling Tower Water and Deposit Analysis
- Carbonaceous Biological Oxygen Demand (CBOD)
- Chemical Oxygen Demand (COD)
- Chlorides
- Cyanide (Total & Amenable)
- Diesel Range Organics (DRO)
- Extractable Petroleum Hydrocarbons (EPH)
- Fat Oil and Grease (FOG)
- Herbicides
- Metals (Aluminum, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Cobalt, Copper, Iron, Lead, Manganese, Mercury, Molybdenum, Nickel, Selenium, Silver, Strontium, Thallium, Vanadium, Zinc)
- Nitrate
- Nitrite
- Organic Acids
- Pesticides
- pH
- Polychlorinated Biphenyls (PCBs)
- Polycyclic Aromatic Hydrocarbons (PAH)
- Reactivity, Corrosivity, Ignitability (RCI)
- Resource Conservation and Recovery Act (RCRA) Metals
- Semi-Volatile Organic Compounds (SVOCs)
- Specific Gravity / Density
- Sulfate
- Surfactants (CTAS and MBAS)
- Total Dissolved Solids (TDS)
- Total Hardness
- Total Kjeldahl Nitrogen
- Total Nitrogen
- Total Phenolics
- Total Phosphorous
- Total Suspended Solids (TSS)
- Toxicity Characteristic Leaching Procedure (TCLP)
- Unknown Identifications
- Viscosity
- Volatile Organic Compounds (VOCs)
- Water Content / Karl Fischer
Example Industrial, Consumer, and Pet Product Testing Services including, but not limited to:
- 1,4 Dioxane
- Aflatoxin
- Allantoin
- Anisidine Value
- Aqua Ammonia
- Bacteria / Aerobic Plate Count
- Benzalkonium Chloride
- Boric Acid
- Brassinosteroids
- Bromocil
- Caffeine
- Camphor
- Choline
- Chondroitin
- Coal Tar
- Colloidal Oatmeal / Avenanthramides
- Conductivity
- Contaminant Screening (heavy metals, etc.)
- DHA
- Diethylene Glycol / Ethylene Glycol (DEG/EG)
- Dimethicone
- Ethanol (ETOH)
- Formaldehyde Donors
- Glucosamine
- Glycerin
- Glycol
- Halogens
- Iodine
- Isocyanates / NCO Content
- Lanolin
- Menthol
- Metals (Aluminum, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Cobalt, Copper, Iron, Lead, Manganese, Mercury, Molybdenum, Nickel, Selenium, Silver, Strontium, Thallium, Vanadium, Zinc)
- Mineral Oil
- Moisture
- Organic Impurities
- PABA
- Peroxide Value
- Petrolatum
- Phenylephrine
- Phthalate
- Pramoxine
- Residual Solvents
- Salicylic Acid
- Silica
- Sodium Benzoate
- Specific Gravity
- Stability Studies
- Total Coliform
- Total Organic Carbon (TOC)
- Crude Protein
- Triclosan
- Uniformity of Dosage Units (UDU)
- Unknown Identifications
- Urea
- Viscosity
- Vitamin A as Beta Carotene RAE
- Vitamin A as Retinyl Acetate
- Vitamin A as Retinyl Palmitate
- Vitamin B1 as Thiamin
- Vitamin B12 as Cyanocobalamin
- Vitamin B12 as Methylcobalamin
- Vitamin B2 as Riboflavin
- Vitamin B3 as Niacinamide NE
- Vitamin B5 as Pantothenic Acid
- Vitamin B6 as Pyridoxine
- Vitamin B7 as Biotin
- Vitamin B9 as Folate
- Vitamin C as Ascorbic Acid
- Vitamin C as Calcium Ascorbate
- Vitamin C as Stay-C
- Vitamin D2 as Ergocalciferol
- Vitamin D3 as Cholecalciferol
- Vitamin E as d-alpha-tocopherol
- Vitamin E as Tocopherol Acetate
- Vitamin E as Total Tocopherols
- Vitamin K1 as Phylloquinone
- Vitamin K3 as MNBS
- Vitamin K3 as MSBC
- Witch Hazel
- Yeast and Mold
- Zinc Oxide
Services
Some of Our
Services
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Exterior Hand Wash
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Interior Detailing
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Exterior + Interior
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Nutritional Testing
Happy Cars, Happy Clients
Testimonials
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Rose Galler
24 Hour Receiving Room
Regular business hours are Monday through Friday, 9:00 a.m. to 3:00 p.m. After hours, please follow the instructions on the Receiving Room door to securely leave your sample(s). You will also be able to obtain additional sample containers and sample submission paperwork. Cornerstone will retrieve your samples the following business day upon opening.
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Shipping/Physical Address:
1775 Moriah Woods Blvd., Ste. 12
Memphis, TN 38117 - Include a signed Sample Submission Form or Chain of Custody
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Email:
info[at]cornerstonelab.com -
Phone:
901/398-4001
Receiving Samples
24/7/365
Submit Samples Today
A submission form is required to accompany any samples submitted to the laboratory.
Please choose the Chain of Custody form for environmental samples only.
All other samples, select the Sample Submission form.
Please choose the appropriate form below, complete all fields, sign, and include with your sample shipment.
Chain of Custody and Sample Submission forms ensure customer information, sample identification and requested analysis are accurate.